The author performed basic-dye vital staining of ascites cells, especially phagocytes, of mice, rats, rabbits, cats, dogs and chickens or acidic-dye vital staining by injecting dyes into the peritoneal cavity of these animals, by means of tissue culture in both cases, and obtained the following results: 1. In the cases of basic-dye vital staining phagocytes present a neutral red rosette formation as their basic picture; and mitochondria are distributed around the nucleus, revealing an appearance much like a moncyte; and the higher the animal is the more pronounced is this tendency. 2. In the acidic-dye vital staining as applied to mice, at each additional injection of the dye the degree and percentage of staining cells increase step by step...